Relative Roughness of pipes!!! 1. The problem statement, all variables and given/known data Here is the Data: Reservoir Water Entry Pipeline Pipeline Pipeline Number Level Coeff. Length Diameter Roughness m [AHD] [m] [m] [mm] 0 20.665 0.814 432.453 1.222 0.089 1 17.787 0.544 111.972 1.361 0.147 2 11.166 0.583 201.258 1.171 0.076 2. Relevant equations I need to solve this three reservoir problem, but I'm stuck in finding the Reynold's number and Friction factor from Relative densities. Relative roughness is just (Pipeline Roughness/Pipe Diameter). From Moody Diagram, the highest Relative roughness is 0.05 and I can't see anything higher than that, but the values I get are all higher than 0.05 for relative roughness. 3. The attempt at a solution Is there a solution to this?